星空传媒 Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies)
Notes Tables
Notes Details

SHAREHOLDERS' EQUITY - Narrative (Details)

v3.20.2

SHAREHOLDERS' EQUITY - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended				9 Months Ended
	Mar. 13, 2020	Dec. 31, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019	Apr. 24, 2019	Nov. 26, 2018
Class of Stock [Line Items]	听	听	听	听	听	听	听	听	听
Common shares, par value	听	听	听	听	听	$ 0.125	听	听	听
Fair value of Cliffs common shares issued for AK Steel outstanding common stock	$ 617.6	听	听	听	听	听	听	听	听
Stock Repurchase Program, Authorized Amount	听	听	听	听	听	听	听	$ 100.0	$ 200.0
Stock Repurchased During Period, Shares	听	听	听	听	听	听	24,400,000	听	听
Payments for Repurchase of common shares	听	听	听	听	听	$ 0.0	$ 252.9	听	听
Forecast [Member] \| ArcelorMittal USA [Member] \| Series B Participating Redeemable Preferred Stock [Member]	听	听	听	听	听	听	听	听	听
Class of Stock [Line Items]	听	听	听	听	听	听	听	听	听
Shares of Cliffs common shares issued to AK Steel stockholders	听	583,273	听	听	听	听	听	听	听
Preferred Class A [Member]	听	听	听	听	听	听	听	听	听
Class of Stock [Line Items]	听	听	听	听	听	听	听	听	听
Preferred Stock, Shares Authorized	听	听	听	听	听	3,000,000	听	听	听
Preferred Stock, Shares Outstanding	听	听	听	听	听	0	听	听	听
Preferred Stock, Shares Issued	听	听	听	听	听	0	听	听	听
Preferred Class B [Member]	听	听	听	听	听	听	听	听	听
Class of Stock [Line Items]	听	听	听	听	听	听	听	听	听
Preferred Stock, Shares Authorized	听	听	听	听	听	4,000,000	听	听	听
Preferred Stock, Shares Outstanding	听	听	听	听	听	0	听	听	听
Preferred Stock, Shares Issued	听	听	听	听	听	0	听	听	听
Common Stock [Member]	听	听	听	听	听	听	听	听	听
Class of Stock [Line Items]	听	听	听	听	听	听	听	听	听
Stock Issued During Period, Shares, Acquisitions	126,800,000	听	126,800,000	听	听	听	听	听	听
Stock Repurchased During Period, Shares	听	听	听	12,900,000	11,500,000	听	听	听	听

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Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity.

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